Partitioning a single server to appear as multiple servers has been increasingly common on microcomputers since the launch of VMware ESX Server in 2001. The physical server typically runs a hypervisor which is tasked with creating, releasing, and managing the resources of "guest" operating systems, or virtual machines. These guest operating systems are allocated a share of resources of the physical server, typically in a manner in which the guest is not aware of any other physical resources save for those allocated to it by the hypervisor. As a VPS runs its own copy of its operating system, customers have superuser-level access to that operating system instance, and can install almost any software that runs on the OS; however, due to the number of virtualization clients typically running on a single machine, a VPS generally has limited processor time, RAM, and disk space.
The really good thing about the VirtualBox is that is completely free it even works on multiple versions. So if you had a Linux server you could actually also run VirtualBox same environment as this here so where it’s now booting Windows for the first time for real after installing it so put in the username I’ll just call this one Windows 7. I have to type in a password and a hint so same password cause I don’t need to put in a Windows key and since it’s so faster install I would just blow away this one when windows actually half-hour months won’t work any longer it’s all for testing anyway.
Let's take Cloudrino as an example. This Indian startup claims to give you a free VPS. To get it, you need to stay in line - the issue is, the line has apparently, over 230 thousand users in it. And it's not moving very fast! However, to get ahead of the line, you can invite your friends to join the line as well. Like that, you can jump some positions.
A VPS runs its own copy of an operating system (OS), and customers may have superuser-level access to that operating system instance, so they can install almost any software that runs on that OS. For many purposes they are functionally equivalent to a dedicated physical server, and being software-defined, are able to be much more easily created and configured. They are priced much lower than an equivalent physical server. However, as they share the underlying physical hardware with other VPSes, performance may be lower, depending on the workload of any other executing virtual machines.